The period of human evolution has coincided with environmental change, including cooling, drying, and wider climate fluctuations over time. How did environmental change shape the evolution of new adaptations, the origin and extinction of early hominin species, and the emergence of our species, Homo sapiens? (‘Hominin’ refers to any bipedal species closely related to humans – that is, on the human divide of the evolutionary tree since human and chimpanzee ancestors branched off from a common ancestor sometime between 6 and 8 million years ago.)
How do we know Earth’s climate has changed? How quickly and how much has climate changed? One important line of evidence is the record of oxygen isotopes through time. This record of δ18O, or oxygen stable isotopes, comes from measuring oxygen in the microscopic skeletons of foraminifera (forams, for short) that lived on the sea floor. This measure can be used as an indicator of changing temperature and glacial ice over time. There are two main trends: an overall decrease in temperature and a larger degree of climate fluctuation over time. The amount of variability in environmental conditions was greater in the later stages of human evolution than in the earlier stages.
Answer:Many countries of Central America have a shared history. This shared history has been influenced by the Maya, the Spanish, and the United States. In several Central American countries, the Maya were building large cities with pyramids and temples by about AD 250.
Explanation:
Answer:
The hijacked Flight 11 was crashed into floors 93 to 99 of the North Tower (1 WTC) at 8:46 a.m. The hijacked Flight 175 struck floors 77 to 85 of the South Tower (2 WTC) 17 minutes later at 9:03 a.m. When the towers were struck, between 16,400 and 18,000 people were in the WTC complex.
Explanation:
Answer:
Your aunt lends you $1000 to help pay for college tuition. She doesn't require you to pay it back until after you graduate. She charges you 5% simple interest. The total amount you will pay is $1050
Explanation:
God is displayed similar to all-intense and all-knowing, mindful of the considerable number of weaknesses and wrongdoings of mankind all in all and of each unique individual. God set out desires for the routes in which individuals were to act, and God is "an irate God" in light of the fact that those ways have not been taken after.
